How to check your AC using a Testo digital manifold - testo 550
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Robert Lee of Testo shows you the important steps in charging and checking an AC system with the testo 550 Digital Manifold.
Learn more about the Testo 550 Digital Manifold by visiting: http: https://www.testo.com/en-MY/Refrigeration+technology/applications_hvacr_refrigeration
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